drivers/gpu/drm/radeon/evergreen_hdmi.c

   1 /*
   2  * Copyright 2008 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  * Copyright 2009 Christian König.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors: Christian König
  25  *          Rafał Miłecki
  26  */
  27 #include <linux/hdmi.h>
  28 #include <drm/drmP.h>
  29 #include <drm/radeon_drm.h>
  30 #include "radeon.h"
  31 #include "radeon_asic.h"
  32 #include "radeon_audio.h"
  33 #include "evergreend.h"
  34 #include "atom.h"
  35
  36 /* enable the audio stream */
  37 void dce4_audio_enable(struct radeon_device *rdev,
  38                               struct r600_audio_pin *pin,
  39                               u8 enable_mask)
  40 {
  41         u32 tmp = RREG32(AZ_HOT_PLUG_CONTROL);
  42
  43         if (!pin)
  44                 return;
  45
  46         if (enable_mask) {
  47                 tmp |= AUDIO_ENABLED;
  48                 if (enable_mask & 1)
  49                         tmp |= PIN0_AUDIO_ENABLED;
  50                 if (enable_mask & 2)
  51                         tmp |= PIN1_AUDIO_ENABLED;
  52                 if (enable_mask & 4)
  53                         tmp |= PIN2_AUDIO_ENABLED;
  54                 if (enable_mask & 8)
  55                         tmp |= PIN3_AUDIO_ENABLED;
  56         } else {
  57                 tmp &= ~(AUDIO_ENABLED |
  58                          PIN0_AUDIO_ENABLED |
  59                          PIN1_AUDIO_ENABLED |
  60                          PIN2_AUDIO_ENABLED |
  61                          PIN3_AUDIO_ENABLED);
  62         }
  63
  64         WREG32(AZ_HOT_PLUG_CONTROL, tmp);
  65 }
  66
  67 void evergreen_hdmi_update_acr(struct drm_encoder *encoder, long offset,
  68         const struct radeon_hdmi_acr *acr)
  69 {
  70         struct drm_device *dev = encoder->dev;
  71         struct radeon_device *rdev = dev->dev_private;
  72         int bpc = 8;
  73
  74         if (encoder->crtc) {
  75                 struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
  76                 bpc = radeon_crtc->bpc;
  77         }
  78
  79         if (bpc > 8)
  80                 WREG32(HDMI_ACR_PACKET_CONTROL + offset,
  81                         HDMI_ACR_AUTO_SEND);    /* allow hw to sent ACR packets when required */
  82         else
  83                 WREG32(HDMI_ACR_PACKET_CONTROL + offset,
  84                         HDMI_ACR_SOURCE |               /* select SW CTS value */
  85                         HDMI_ACR_AUTO_SEND);    /* allow hw to sent ACR packets when required */
  86
  87         WREG32(HDMI_ACR_32_0 + offset, HDMI_ACR_CTS_32(acr->cts_32khz));
  88         WREG32(HDMI_ACR_32_1 + offset, acr->n_32khz);
  89
  90         WREG32(HDMI_ACR_44_0 + offset, HDMI_ACR_CTS_44(acr->cts_44_1khz));
  91         WREG32(HDMI_ACR_44_1 + offset, acr->n_44_1khz);
  92
  93         WREG32(HDMI_ACR_48_0 + offset, HDMI_ACR_CTS_48(acr->cts_48khz));
  94         WREG32(HDMI_ACR_48_1 + offset, acr->n_48khz);
  95 }
  96
  97 void dce4_afmt_write_latency_fields(struct drm_encoder *encoder,
  98                 struct drm_connector *connector, struct drm_display_mode *mode)
  99 {
 100         struct radeon_device *rdev = encoder->dev->dev_private;
 101         u32 tmp = 0;
 102
 103         if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
 104                 if (connector->latency_present[1])
 105                         tmp = VIDEO_LIPSYNC(connector->video_latency[1]) |
 106                                 AUDIO_LIPSYNC(connector->audio_latency[1]);
 107                 else
 108                         tmp = VIDEO_LIPSYNC(255) | AUDIO_LIPSYNC(255);
 109         } else {
 110                 if (connector->latency_present[0])
 111                         tmp = VIDEO_LIPSYNC(connector->video_latency[0]) |
 112                                 AUDIO_LIPSYNC(connector->audio_latency[0]);
 113                 else
 114                         tmp = VIDEO_LIPSYNC(255) | AUDIO_LIPSYNC(255);
 115         }
 116         WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_RESPONSE_LIPSYNC, tmp);
 117 }
 118
 119 void dce4_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
 120         u8 *sadb, int sad_count)
 121 {
 122         struct radeon_device *rdev = encoder->dev->dev_private;
 123         u32 tmp;
 124
 125         /* program the speaker allocation */
 126         tmp = RREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER);
 127         tmp &= ~(DP_CONNECTION | SPEAKER_ALLOCATION_MASK);
 128         /* set HDMI mode */
 129         tmp |= HDMI_CONNECTION;
 130         if (sad_count)
 131                 tmp |= SPEAKER_ALLOCATION(sadb[0]);
 132         else
 133                 tmp |= SPEAKER_ALLOCATION(5); /* stereo */
 134         WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp);
 135 }
 136
 137 void dce4_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
 138         u8 *sadb, int sad_count)
 139 {
 140         struct radeon_device *rdev = encoder->dev->dev_private;
 141         u32 tmp;
 142
 143         /* program the speaker allocation */
 144         tmp = RREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER);
 145         tmp &= ~(HDMI_CONNECTION | SPEAKER_ALLOCATION_MASK);
 146         /* set DP mode */
 147         tmp |= DP_CONNECTION;
 148         if (sad_count)
 149                 tmp |= SPEAKER_ALLOCATION(sadb[0]);
 150         else
 151                 tmp |= SPEAKER_ALLOCATION(5); /* stereo */
 152         WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp);
 153 }
 154
 155 void evergreen_hdmi_write_sad_regs(struct drm_encoder *encoder,
 156         struct cea_sad *sads, int sad_count)
 157 {
 158         int i;
 159         struct radeon_device *rdev = encoder->dev->dev_private;
 160         static const u16 eld_reg_to_type[][2] = {
 161                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM },
 162                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 },
 163                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 },
 164                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 },
 165                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 },
 166                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC },
 167                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS },
 168                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC },
 169                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 },
 170                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD },
 171                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP },
 172                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
 173         };
 174
 175         for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
 176                 u32 value = 0;
 177                 u8 stereo_freqs = 0;
 178                 int max_channels = -1;
 179                 int j;
 180
 181                 for (j = 0; j < sad_count; j++) {
 182                         struct cea_sad *sad = &sads[j];
 183
 184                         if (sad->format == eld_reg_to_type[i][1]) {
 185                                 if (sad->channels > max_channels) {
 186                                         value = MAX_CHANNELS(sad->channels) |
 187                                                 DESCRIPTOR_BYTE_2(sad->byte2) |
 188                                                 SUPPORTED_FREQUENCIES(sad->freq);
 189                                         max_channels = sad->channels;
 190                                 }
 191
 192                                 if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
 193                                         stereo_freqs |= sad->freq;
 194                                 else
 195                                         break;
 196                         }
 197                 }
 198
 199                 value |= SUPPORTED_FREQUENCIES_STEREO(stereo_freqs);
 200
 201                 WREG32_ENDPOINT(0, eld_reg_to_type[i][0], value);
 202         }
 203 }
 204
 205 /*
 206  * build a AVI Info Frame
 207  */
 208 void evergreen_set_avi_packet(struct radeon_device *rdev, u32 offset,
 209     unsigned char *buffer, size_t size)
 210 {
 211         uint8_t *frame = buffer + 3;
 212
 213         WREG32(AFMT_AVI_INFO0 + offset,
 214                 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
 215         WREG32(AFMT_AVI_INFO1 + offset,
 216                 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));
 217         WREG32(AFMT_AVI_INFO2 + offset,
 218                 frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));
 219         WREG32(AFMT_AVI_INFO3 + offset,
 220                 frame[0xC] | (frame[0xD] << 8) | (buffer[1] << 24));
 221
 222         WREG32_OR(HDMI_INFOFRAME_CONTROL0 + offset,
 223                 HDMI_AVI_INFO_SEND |    /* enable AVI info frames */
 224                 HDMI_AVI_INFO_CONT);    /* required for audio info values to be updated */
 225
 226         WREG32_P(HDMI_INFOFRAME_CONTROL1 + offset,
 227                 HDMI_AVI_INFO_LINE(2),  /* anything other than 0 */
 228                 ~HDMI_AVI_INFO_LINE_MASK);
 229 }
 230
 231 void dce4_hdmi_audio_set_dto(struct radeon_device *rdev,
 232         struct radeon_crtc *crtc, unsigned int clock)
 233 {
 234         unsigned int max_ratio = clock / 24000;
 235         u32 dto_phase;
 236         u32 wallclock_ratio;
 237         u32 value;
 238
 239         if (max_ratio >= 8) {
 240                 dto_phase = 192 * 1000;
 241                 wallclock_ratio = 3;
 242         } else if (max_ratio >= 4) {
 243                 dto_phase = 96 * 1000;
 244                 wallclock_ratio = 2;
 245         } else if (max_ratio >= 2) {
 246                 dto_phase = 48 * 1000;
 247                 wallclock_ratio = 1;
 248         } else {
 249                 dto_phase = 24 * 1000;
 250                 wallclock_ratio = 0;
 251         }
 252
 253         value = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
 254         value |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
 255         value &= ~DCCG_AUDIO_DTO1_USE_512FBR_DTO;
 256         WREG32(DCCG_AUDIO_DTO0_CNTL, value);
 257
 258         /* Two dtos; generally use dto0 for HDMI */
 259         value = 0;
 260
 261         if (crtc)
 262                 value |= DCCG_AUDIO_DTO0_SOURCE_SEL(crtc->crtc_id);
 263
 264         WREG32(DCCG_AUDIO_DTO_SOURCE, value);
 265
 266         /* Express [24MHz / target pixel clock] as an exact rational
 267          * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
 268          * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
 269          */
 270         WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase);
 271         WREG32(DCCG_AUDIO_DTO0_MODULE, clock);
 272 }
 273
 274 void dce4_dp_audio_set_dto(struct radeon_device *rdev,
 275         struct radeon_crtc *crtc, unsigned int clock)
 276 {
 277         u32 value;
 278
 279         value = RREG32(DCCG_AUDIO_DTO1_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
 280         value |= DCCG_AUDIO_DTO1_USE_512FBR_DTO;
 281         WREG32(DCCG_AUDIO_DTO1_CNTL, value);
 282
 283         /* Two dtos; generally use dto1 for DP */
 284         value = 0;
 285         value |= DCCG_AUDIO_DTO_SEL;
 286
 287         if (crtc)
 288                 value |= DCCG_AUDIO_DTO0_SOURCE_SEL(crtc->crtc_id);
 289
 290         WREG32(DCCG_AUDIO_DTO_SOURCE, value);
 291
 292         /* Express [24MHz / target pixel clock] as an exact rational
 293          * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
 294          * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
 295          */
 296         WREG32(DCCG_AUDIO_DTO1_PHASE, 24000);
 297         WREG32(DCCG_AUDIO_DTO1_MODULE, rdev->clock.max_pixel_clock * 10);
 298 }
 299
 300 void dce4_set_vbi_packet(struct drm_encoder *encoder, u32 offset)
 301 {
 302         struct drm_device *dev = encoder->dev;
 303         struct radeon_device *rdev = dev->dev_private;
 304
 305         WREG32(HDMI_VBI_PACKET_CONTROL + offset,
 306                 HDMI_NULL_SEND |        /* send null packets when required */
 307                 HDMI_GC_SEND |          /* send general control packets */
 308                 HDMI_GC_CONT);          /* send general control packets every frame */
 309 }
 310
 311 void dce4_hdmi_set_color_depth(struct drm_encoder *encoder, u32 offset, int bpc)
 312 {
 313         struct drm_device *dev = encoder->dev;
 314         struct radeon_device *rdev = dev->dev_private;
 315         struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 316         uint32_t val;
 317
 318         val = RREG32(HDMI_CONTROL + offset);
 319         val &= ~HDMI_DEEP_COLOR_ENABLE;
 320         val &= ~HDMI_DEEP_COLOR_DEPTH_MASK;
 321
 322         switch (bpc) {
 323                 case 0:
 324                 case 6:
 325                 case 8:
 326                 case 16:
 327                 default:
 328                         DRM_DEBUG("%s: Disabling hdmi deep color for %d bpc.\n",
 329                                          connector->name, bpc);
 330                         break;
 331                 case 10:
 332                         val |= HDMI_DEEP_COLOR_ENABLE;
 333                         val |= HDMI_DEEP_COLOR_DEPTH(HDMI_30BIT_DEEP_COLOR);
 334                         DRM_DEBUG("%s: Enabling hdmi deep color 30 for 10 bpc.\n",
 335                                          connector->name);
 336                         break;
 337                 case 12:
 338                         val |= HDMI_DEEP_COLOR_ENABLE;
 339                         val |= HDMI_DEEP_COLOR_DEPTH(HDMI_36BIT_DEEP_COLOR);
 340                         DRM_DEBUG("%s: Enabling hdmi deep color 36 for 12 bpc.\n",
 341                                          connector->name);
 342                         break;
 343         }
 344
 345         WREG32(HDMI_CONTROL + offset, val);
 346 }
 347
 348 /*
 349  * update the info frames with the data from the current display mode
 350  */
 351 void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode)
 352 {
 353         struct drm_device *dev = encoder->dev;
 354         struct radeon_device *rdev = dev->dev_private;
 355         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 356         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 357         uint32_t offset;
 358
 359         if (!dig || !dig->afmt)
 360                 return;
 361
 362         /* Silent, r600_hdmi_enable will raise WARN for us */
 363         if (!dig->afmt->enabled)
 364                 return;
 365         offset = dig->afmt->offset;
 366
 367         /* disable audio prior to setting up hw */
 368         dig->afmt->pin = radeon_audio_get_pin(encoder);
 369         radeon_audio_enable(rdev, dig->afmt->pin, 0);
 370
 371         radeon_audio_set_dto(encoder, mode->clock);
 372         radeon_audio_set_vbi_packet(encoder);
 373         radeon_hdmi_set_color_depth(encoder);
 374
 375         WREG32(HDMI_INFOFRAME_CONTROL0 + offset,
 376                HDMI_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */
 377                HDMI_AUDIO_INFO_CONT); /* required for audio info values to be updated */
 378
 379         WREG32(AFMT_INFOFRAME_CONTROL0 + offset,
 380                AFMT_AUDIO_INFO_UPDATE); /* required for audio info values to be updated */
 381
 382         WREG32(HDMI_INFOFRAME_CONTROL1 + offset,
 383                HDMI_AUDIO_INFO_LINE(2)); /* anything other than 0 */
 384
 385         WREG32(HDMI_GC + offset, 0); /* unset HDMI_GC_AVMUTE */
 386
 387         WREG32(HDMI_AUDIO_PACKET_CONTROL + offset,
 388                HDMI_AUDIO_DELAY_EN(1) | /* set the default audio delay */
 389                HDMI_AUDIO_PACKETS_PER_LINE(3)); /* should be suffient for all audio modes and small enough for all hblanks */
 390
 391         WREG32(AFMT_AUDIO_PACKET_CONTROL + offset,
 392                AFMT_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */
 393
 394         /* fglrx clears sth in AFMT_AUDIO_PACKET_CONTROL2 here */
 395
 396         radeon_audio_update_acr(encoder, mode->clock);
 397
 398         WREG32(AFMT_60958_0 + offset,
 399                AFMT_60958_CS_CHANNEL_NUMBER_L(1));
 400
 401         WREG32(AFMT_60958_1 + offset,
 402                AFMT_60958_CS_CHANNEL_NUMBER_R(2));
 403
 404         WREG32(AFMT_60958_2 + offset,
 405                AFMT_60958_CS_CHANNEL_NUMBER_2(3) |
 406                AFMT_60958_CS_CHANNEL_NUMBER_3(4) |
 407                AFMT_60958_CS_CHANNEL_NUMBER_4(5) |
 408                AFMT_60958_CS_CHANNEL_NUMBER_5(6) |
 409                AFMT_60958_CS_CHANNEL_NUMBER_6(7) |
 410                AFMT_60958_CS_CHANNEL_NUMBER_7(8));
 411
 412         radeon_audio_write_speaker_allocation(encoder);
 413
 414         WREG32(AFMT_AUDIO_PACKET_CONTROL2 + offset,
 415                AFMT_AUDIO_CHANNEL_ENABLE(0xff));
 416
 417         /* fglrx sets 0x40 in 0x5f80 here */
 418
 419         radeon_audio_select_pin(encoder);
 420         radeon_audio_write_sad_regs(encoder);
 421         radeon_audio_write_latency_fields(encoder, mode);
 422
 423         if (radeon_audio_set_avi_packet(encoder, mode) < 0)
 424                 return;
 425
 426         WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + offset,
 427                   AFMT_AUDIO_SAMPLE_SEND); /* send audio packets */
 428
 429         /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */
 430         WREG32(AFMT_RAMP_CONTROL0 + offset, 0x00FFFFFF);
 431         WREG32(AFMT_RAMP_CONTROL1 + offset, 0x007FFFFF);
 432         WREG32(AFMT_RAMP_CONTROL2 + offset, 0x00000001);
 433         WREG32(AFMT_RAMP_CONTROL3 + offset, 0x00000001);
 434
 435         /* enable audio after to setting up hw */
 436         radeon_audio_enable(rdev, dig->afmt->pin, 0xf);
 437 }
 438
 439 void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable)
 440 {
 441         struct drm_device *dev = encoder->dev;
 442         struct radeon_device *rdev = dev->dev_private;
 443         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 444         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 445
 446         if (!dig || !dig->afmt)
 447                 return;
 448
 449         /* Silent, r600_hdmi_enable will raise WARN for us */
 450         if (enable && dig->afmt->enabled)
 451                 return;
 452         if (!enable && !dig->afmt->enabled)
 453                 return;
 454
 455         if (!enable && dig->afmt->pin) {
 456                 radeon_audio_enable(rdev, dig->afmt->pin, 0);
 457                 dig->afmt->pin = NULL;
 458         }
 459
 460         dig->afmt->enabled = enable;
 461
 462         DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n",
 463                   enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id);
 464 }